• Welcome to ScubaBoard


  1. Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

    Benefits of registering include

    • Ability to post and comment on topics and discussions.
    • A Free photo gallery to share your dive photos with the world.
    • You can make this box go away

    Joining is quick and easy. Login or Register now by clicking on the button

Opinions

Discussion in 'Poseidon' started by Kharon, Mar 18, 2019.

  1. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    15,673
    6,988
    113
    @Protondecay123 my primary regulator setup for backmount doubles, CCR, and sidemount is a Poseidon Jetstream on a Scubapro MK25. No issues. They can be tuned to behave at the 135-145psi IP that most regs call for, but it's better to pull the first stage back down to the 123psi.

    @Kharon IP that changes with depth is absolute intermediate pressure, second stages only care about relative intermediate pressure. All downstream second stages that are put on an over-compensating first stage *basically all sealed diaphragms*, will eventually start freeflowing as you get deep enough because the relative IP climbs with depth. Poseidon first stages are all open, and all piston first stages whether sealed or not will hold a constant relative IP. The Jetstream/Xstream will get a bit stiffer to crack on an over-compensating first stage, but it will stay well within the tolerances of any CE approved regulator.
     
    Kharon likes this.
  2. Caveeagle

    Caveeagle Rebreather Pilot

    # of Dives: 500 - 999
    Location: High Springs, FL
    1,463
    948
    113
    FWIW, It’s sherwood and Dive Rite have sold versions of their regulators with re-branded Jetstream second stages. So, there is some history of mating this second stage with non Poseidon first stages.
     
  3. rhwestfall

    rhwestfall Solo Diver

    # of Dives: 200 - 499
    Location: "La Grande Ile"
    12,275
    10,975
    113
    My modern regulators are Poseidon XStream and ScubaPro MK17/G250v. Wife and daughter dive HOG D1/Classics for cold water. Little to no issues at all.
     
  4. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    15,673
    6,988
    113
    Dive Rite paired it with a Poseidon MK3 first stage, don't believe they ever paired it with anything else. Sherwood sold it with both their first stages and Poseidon first stages.
     
  5. guyharrisonphoto

    guyharrisonphoto ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Florida, USA
    1,951
    1,033
    113
    Kharon, you just cannot go wrong with Poseidons. I have 2 regs: a Kraken, and an Poseidon Xtream (first and second stages). I fully believe that you will never have any problems with these. The first stage is built like a rock and designed not to wear out. the second, if it anything like my Tekna servo seconds in the 80s, will go many many years without really needing a service, if you are so inclined. Breathing--second to none. Like tbone, I am a big fan of this design.
     

Share This Page